Abstract:
A plasma processing plant for plastic bottles, having a vacuum chamber arranged inside the processing chamber and when a respective bottle opening is pressed against a valve, the valve will open and establish a connection between the interior of the bottle and the vacuum chamber, and the chambers are continuously sealed against one another in a gastight fashion. With such approach, the gas can be conducted more easily and the number of control mechanisms can be reduced.
Abstract:
A magnet system with a magnet arrangement (M), a working volume (V) and a pulse tube cooler (P) with magnetic regenerator material (r) is characterized in that a shielding (m) of magnetic material is provided which reduces the stray field of the magnet arrangement at the location of the magnetic regenerator material (r) and is characterized in that ⅓|{tilde over (m)}RegR|+|mMagΔx|
Abstract:
A dosing pump includes a dosing chamber (14), a suction channel (32) communicating with the dosing chamber (14) and a pressure channel (20) communicating with the dosing chamber (14). Features for popping gas bubbles are arranged in the suction channel
Abstract:
A device (1) for transporting containers and in particular plastic containers (10) with a main carrier (2) rotatable about a pre-specified main axis (D), with a multiplicity of transport elements (12a, 12b) for transporting the plastic containers (10), wherein each of these transport elements (12a, 12b) is arranged on an arm (8a, 8b) and can swivel in relation to the main carrier (2) about a pre-specified geometric pivot axis (S1, S2), and a multiplicity of independently controllable first drives (14a, 14b) is provided to generate the swivel movements of the transport elements (12a, 12b). According to the invention, each transport element (12a, 12b) is also mobile linear in relation to the pivot axis (S1, S2) about which it is pivotable, and a multiplicity of independently controllable second drives (16a, 16b) is provided to generate the linear movement of the transport elements (12a, 12b).
Abstract:
A cryostat assembly (1) for a superconducting magnet assembly, with a helium tank (2) for liquid helium, whereby the superconducting magnet assembly (6) is located in the helium tank (2), with a nitrogen tank (3) for liquid nitrogen, whereby the nitrogen tank (3) encloses the helium tank (2), and with at least one access tube (4) in which the current lead is mounted through which current can be lead from the room-temperature warm area of the cryostat (1) into the superconducting magnet assembly (6), whereby the current lead assembly comprises at least one current lead with a normal conductor part (13) and a superconductor part (14) made of HTS material, characterized in that a terminal (12) of the at least one current lead, through which the normal conductor part (13) is electrically connected with the superconductor part (14) is thermally coupled with a wall of the nitrogen tank (3). This ensures an efficient cooling of the transition from the HTS to the normal conductor in the current lead in a simple and cost-effective way.
Abstract:
A control circuit (1) for driving a gas discharge lamp, in particular a fluorescent lamp (FL), having a controllable converter (2) for converting a DC voltage to an AC voltage and having two feed lines (3, 4), which are connected on the AC-voltage side to the converter (2), and between which the gas discharge lamp can be connected, an inductor (L1), a first capacitance (C1) and a first controllable switching element (T1) being connected in series in the feed lines (3, 4). The feed lines (3, 4) are connected to one another via a second switching element (T2). A control unit (ST2) controls the switching elements (T1, T2, T3) in synchronism with the AC voltage of the converter (2) and is designed such that the second switching element (T2) is opened after a closed phase for the purpose of starting the gas discharge lamp at such a point in time that the AC voltage at the inductor (L1), which is set in the resonant circuit including the inductor (L1) and the parasitic capacitance (C4) of the second switching element (T2), and the AC voltage of the converter (2), approximately in-phase in terms of their extrema, are added to give a starting voltage. Furthermore, provided is a corresponding method for driving the gas discharge lamp.
Abstract:
A cryostat configuration for keeping cryogenic fluids in at least one cryocontainer, comprising an outer shell and a neck tube containing a cold head of a cryocooler, wherein the coldest cold stage of the cold head is disposed in a contact-free manner relative to the neck tube and the cryocontainer, and wherein a cryogenic fluid is located in the neck tube, is characterized in that the neck tube is disposed between the outer shell and a cryocontainer and/or the radiation shield, the neck tube is closed in a gas-tight manner at the end facing the cryocontainer and/or the radiation shield, the neck tube is coupled to the cryocontainer and/or a radiation shield disposed between the cryocontainers or a cryocontainer and the outer shell, via a connection having a good thermal conductivity, the neck tube comprising a fill-in device at an end located at ambient temperature. This permits efficient heat transfer between the cryocooler and the cryocontainer with little vibration, while simultaneously ensuring great safety during maintenance work without discharging the magnet.
Abstract:
A cryostat configuration for keeping liquid helium comprising an outer jacket (3) surrounding a helium container (1) connected at at least two suspension tubes (2) to the outer jacket (3), wherein the helium container (1) also comprises a neck tube (5) whose upper warm end is connected to the outer jacket (3) and whose lower cold end is connected to the helium container (1) and into which a multi-stage cold head (6) of a cryocooler is installed, wherein the outer jacket (3), the helium container (1), the suspension tubes (2) and the neck tube (5) delimit an evacuated space (7), and the helium container (1) is surrounded by at least one radiation shield (4) which is connected in a heat-conducting fashion to the suspension tubes (2) and also to the neck tube (5) of the helium container (1) is characterized in that there is a direct connection (8) between the warm ends of the suspension tubes (2) and the neck tube (5) through which helium gas can flow. A cryostat configuration of this type considerably reduces or completely eliminates the heat input via the suspension tubes of an actively cryocooler-cooled NMR magnet system, as a result of which a less powerful cryocooler can be used.
Abstract:
The invention relates to a method for producing a strand-like, particularly band-like semi-finished part for electrical contacts, wherein the semi-finished part has a top side intended for making the electrical contact, said top side made from a silver-based composite material in which one or multiple metal oxides or carbon are embedded, and has a carrier layer supporting the composite material made of silver or a silver-based alloy, said method having the following steps: Powder-metallurgic production of a block made from the silver-based composite material, encasing of the block made of the composite material with a powder made primarily of silver, compressing the block, encased by the metal powder, to condense the metal powder, sintering the compressed block, reshaping the sintered block by extrusion pressing, creating a partial strand with a top side made from composite material and a bottom side made from silver or a silver-based alloy.
Abstract:
The invention relates to a clamping device for clamping at least two components (6, 7) in a radiation-protected machine tool, particularly in a laser welding device (1), comprising—a receptacle (18) for supporting the first component (6), —a clamping head (16) for applying a force to the second component (7) in order to generate clamping pressure at the joint surface (8, 9) between the two components (6, 7), —an inner clamping jaw (11) located within the peripheral beam path (10) of the machine tool, the jaw having a clamping surface (12) for internally clamping the components (6, 7), and—narrow connecting struts (15) for connecting the inner clamping jaw (11) to the external clamping head (16), said connecting struts (15) bridging the passage gap (7) in the clamping head (16) allowing access for the beam path (10) of the machine tool to the components (6, 7).